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'---------------------------------------------------------------------------------------
' Module : modResizeForm
' Author : Jamie Czernik BSc {jamie@jamiessoftware.tk}
' Purpose : Resizes Microsoft Access forms to fit the current screen resolution.
' Use : Work on a back-up copy of your application first.
' Change the constant DESIGN_HORZRES to the horizontal screen resolution
' used when forms were designed. Change the constant DESIGN_VERTRES to the
' vertical screen resolution used when forms were designed.
' Change DESIGN_PIXELS to the DPI used if required.
' Call ResizeForm Me on the onLoad event for each form (even sub forms).
' Bugs: : Tab controls and Option Groups are very difficult to handle - see comments
' throughout code for more information. Scaling forms up works much better
' than trying to scale forms down. Scaling down will probably distrot fronts.
' FIX:- Redesign forms to fit lowest resoltion and scale up instead.
' Send bug reports to: jamie@jamiessoftware.tk for future fixes.
' (No immediate support is provided. *Please* check online help, message board
' and latest version at http://www.jamiessoftware.tk before sending bug reports)
' Test: Test your application at each possible screen resolution after installing.
' Please : Consider donating $5 or $10 if you find this code useful by visiting:-
' http://jamiessoftware.tk/resizeform/rf_download.html
' Credits : This modResizeForm module was created by Jamie Czernik
' Contains improvement suggestions/updates from: Dr. Martin Dumskyj,
' Nathan Carroll & Wilfrid Underwood.
' Contains enhancements which fixed some problems in combo boxes, list
' boxes, and tab controls from: Myke Myers.
' Updated : July 2004.
'---------------------------------------------------------------------------------------
Option Compare Database
Option Explicit
'-----------------------------MODULE CONSTANTS & VARIABLES------------------------------
Private Const DESIGN_HORZRES As Long = 640 '<- CHANGE THIS VALUE TO THE RESOLUTION
'YOU DESIGNED YOUR FORMS IN.
'(e.g. 800 X 600 -> 800)
Private Const DESIGN_VERTRES As Long = 480 '<- CHANGE THIS VALUE TO THE RESOLUTION
'YOU DESIGNED YOUR FORMS IN.
'(e.g. 800 X 600 -> 600)
Private Const DESIGN_PIXELS As Long = 96 '<- CHANGE THIS VALUE TO THE DPI
'SETTING YOU DESIGNED YOUR FORMS IN.
'(If in doubt do not alter the
'DESIGN_PIXELS setting as most
'systems use 96 dpi.)
Public Const WM_HORZRES As Long = 8
Private Const WM_VERTRES As Long = 10
Private Const WM_LOGPIXELSX As Long = 88
Private Const TITLEBAR_PIXELS As Long = 18
Private Const COMMANDBAR_PIXELS As Long = 26
Private Const COMMANDBAR_LEFT As Long = 0
Private Const COMMANDBAR_TOP As Long = 1
Private OrigWindow As tWindow 'Module level variable holds the
'original window dimensions before
'resize.
Private Type tRect
left As Long
Top As Long
right As Long
bottom As Long
End Type
Private Type tDisplay
Height As Long
Width As Long
DPI As Long
End Type
Private Type tWindow
Height As Long
Width As Long
End Type
Private Type tControl
Name As String
Height As Long
Width As Long
Top As Long
left As Long
End Type
'-------------------------- END MODULE CONSTANTS & VARIABLES----------------------------
'------------------------------------API DECLARATIONS-----------------------------------
Public Declare Function WM_apiGetDeviceCaps Lib "gdi32" Alias "GetDeviceCaps" _
(ByVal hdc As Long, ByVal nIndex As Long) As Long
Private Declare Function WM_apiGetDesktopWindow Lib "user32" Alias "GetDesktopWindow" _
() As Long
Public Declare Function WM_apiGetDC Lib "user32" Alias "GetDC" _
(ByVal hwnd As Long) As Long
Private Declare Function WM_apiReleaseDC Lib "user32" Alias "ReleaseDC" _
(ByVal hwnd As Long, ByVal hdc As Long) As Long
Private Declare Function WM_apiGetWindowRect Lib "user32.dll" Alias "GetWindowRect" _
(ByVal hwnd As Long, lpRect As tRect) As Long
Private Declare Function WM_apiMoveWindow Lib "user32.dll" Alias "MoveWindow" _
(ByVal hwnd As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, _
ByVal nHeight As Long, ByVal bRepaint As Long) As Long
Private Declare Function WM_apiIsZoomed Lib "user32.dll" Alias "IsZoomed" _
(ByVal hwnd As Long) As Long
'--------------------------------- END API DECLARATIONS----------------------------------
'---------------------------------------------------------------------------------------
' Procedure : getScreenResolution
' DateTime : 27/01/2003
' Author : Jamie Czernik
' Purpose : Function returns the current height, width and dpi.
'---------------------------------------------------------------------------------------
Private Function getScreenResolution() As tDisplay
Dim hDCcaps As Long
Dim lngRtn As Long
On Error Resume Next
'API call get current resolution:-
hDCcaps = WM_apiGetDC(0) 'Get display context for desktop (hwnd = 0).
With getScreenResolution
.Height = WM_apiGetDeviceCaps(hDCcaps, WM_VERTRES)
.Width = WM_apiGetDeviceCaps(hDCcaps, WM_HORZRES)
.DPI = WM_apiGetDeviceCaps(hDCcaps, WM_LOGPIXELSX)
End With
lngRtn = WM_apiReleaseDC(0, hDCcaps) 'Release display context.
End Function
'---------------------------------------------------------------------------------------
' Procedure : getFactor
' DateTime : 27/01/2003
' Author : Jamie Czernik
' Purpose : Function returns the value that the form's/control's height, width, top &
' left should be multiplied by to fit the current screen resolution.
'---------------------------------------------------------------------------------------
Private Function getFactor(blnVert As Boolean) As Single
Dim sngFactorP As Single
On Error Resume Next
If getScreenResolution.DPI <> 0 Then
sngFactorP = DESIGN_PIXELS / getScreenResolution.DPI
Else
sngFactorP = 1 'Error with dpi reported so assume 96 dpi.
End If
If blnVert Then 'return vertical resolution.
getFactor = (getScreenResolution.Height / DESIGN_VERTRES) * sngFactorP
Else 'return horizontal resolution.
getFactor = (getScreenResolution.Width / DESIGN_HORZRES) * sngFactorP
End If
End Function
'---------------------------------------------------------------------------------------
' Procedure : ReSizeForm
' DateTime : 27/01/2003
' Author : Jamie Czernik
' Purpose : Routine should be called on a form's onOpen or onLoad event.
'---------------------------------------------------------------------------------------
Public Sub ReSizeForm(ByVal frm As Access.Form)
Dim rectWindow As tRect
Dim lngWidth As Long
Dim lngHeight As Long
Dim sngVertFactor As Single
Dim sngHorzFactor As Single
On Error Resume Next
sngVertFactor = getFactor(True) 'Local function returns vertical size change.
sngHorzFactor = getFactor(False) 'Local function returns horizontal size change.
Resize sngVertFactor, sngHorzFactor, frm 'Local procedure to resize form sections & controls.
If WM_apiIsZoomed(frm.hwnd) = 0 Then 'Don't change window settings for max'd form.
Access.DoCmd.RunCommand acCmdAppMaximize 'Maximize the Access Window.
'Store for dimensions in rectWindow:-
Call WM_apiGetWindowRect(frm.hwnd, rectWindow)
'Calculate and store form height and width in local variables:-
With rectWindow
lngWidth = .right - .left
lngHeight = .bottom - .Top
End With
'Resize the form window as required (don't resize this for sub forms):-
If frm.Parent.Name = VBA.vbNullString Then
Call WM_apiMoveWindow(frm.hwnd, ((getScreenResolution.Width - _
(sngHorzFactor * lngWidth)) / 2) - getLeftOffset, _
((getScreenResolution.Height - (sngVertFactor * lngHeight)) / 2) - _
getTopOffset, lngWidth * sngHorzFactor, lngHeight * sngVertFactor, 1)
End If
End If
Set frm = Nothing 'Free up resources.
End Sub
'---------------------------------------------------------------------------------------
' Procedure : Resize
' DateTime : 27/01/2003
' Author : Jamie Czernik
' Purpose : Routine re-scales the form sections and controls.
'---------------------------------------------------------------------------------------
Private Sub Resize(sngVertFactor As Single, sngHorzFactor As Single, ByVal frm As Access.Form)
Dim ctl As Access.Control 'Form control variable.
Dim arrCtls() As tControl 'Array of Tab and Option Group control properties.
Dim lngI As Long 'Loop counter.
Dim lngJ As Long 'Loop counter.
Dim lngWidth As Long 'Stores form's new width.
Dim lngHeaderHeight As Long 'Stores header's new height.
Dim lngDetailHeight As Long 'Stores detail's new height.
Dim lngFooterHeight As Long 'Stores footer's new height.
Dim blnHeaderVisible As Boolean 'True if form header visible before resize.
Dim blnDetailVisible As Boolean 'True if form detail visible before resize.
Dim blnFooterVisible As Boolean 'True if form footer visible before resize.
Const FORM_MAX As Long = 31680 'Maximum possible form width & section height.
On Error Resume Next
With frm
.Painting = False 'Turn off form painting.
'Calculate form's new with and section heights and store in local variables
'for later use:-
lngWidth = .Width * sngHorzFactor
lngHeaderHeight = .Section(Access.acHeader).Height * sngVertFactor
lngDetailHeight = .Section(Access.acDetail).Height * sngVertFactor
lngFooterHeight = .Section(Access.acFooter).Height * sngVertFactor
'Now maximize the form's width and height while controls are being resized:-
.Width = FORM_MAX
.Section(Access.acHeader).Height = FORM_MAX
.Section(Access.acDetail).Height = FORM_MAX
.Section(Access.acFooter).Height = FORM_MAX
'Hiding form sections during resize prevents invalid page fault after
'resizing column widths for list boxes on forms with a header/footer:-
blnHeaderVisible = .Section(Access.acHeader).Visible
blnDetailVisible = .Section(Access.acDetail).Visible
blnFooterVisible = .Section(Access.acFooter).Visible
.Section(Access.acHeader).Visible = False
.Section(Access.acDetail).Visible = False
.Section(Access.acFooter).Visible = False
End With
'Resize array to hold 1 element:-
ReDim arrCtls(0)
'Gather properties for Tabs and Option Groups to recify height/width problems:-
For Each ctl In frm.Controls
If ((ctl.ControlType = Access.acTabCtl) Or _
(ctl.ControlType = Access.acOptionGroup)) Then
With arrCtls(lngI)
.Name = ctl.Name
.Height = ctl.Height
.Width = ctl.Width
.Top = ctl.Top
.left = ctl.left
End With
lngI = lngI + 1
ReDim Preserve arrCtls(lngI) 'Increase the size of the array.
End If
Next ctl
'Resize and locate each control:-
For Each ctl In frm.Controls
If ctl.ControlType <> Access.acPage Then 'Ignore pages in Tab controls.
With ctl
.Height = .Height * sngVertFactor
.left = .left * sngHorzFactor
.Top = .Top * sngVertFactor
.Width = .Width * sngHorzFactor
.FontSize = .FontSize * sngVertFactor
'Enhancement by Myke Myers --------------------------------------->
'Fix certain Combo Box, List Box and Tab control properties:-
Select Case .ControlType
Case Access.acListBox
.ColumnWidths = adjustColumnWidths(.ColumnWidths, sngHorzFactor)
Case Access.acComboBox
.ColumnWidths = adjustColumnWidths(.ColumnWidths, sngHorzFactor)
.ListWidth = .ListWidth * sngHorzFactor
Case Access.acTabCtl
.TabFixedWidth = .TabFixedWidth * sngHorzFactor
.TabFixedHeight = .TabFixedHeight * sngVertFactor
End Select
'------------------------------------> End enhancement by Myke Myers.
End With
End If
Next ctl
'************************************************* *******
'* Note if scaling form up: If Tab controls or Option *
'* Groups are too near the bottom or right side of the *
'* form they WILL distort due to the way that Access *
'* keeps the child controls within the control frame. *
'* Try moving these controls left or up if possible. *
'* The opposite is true for scaling down so in this *
'* case try moving these controls right or down. *
'************************************************* *******
'Now try to rectify Tabs and Option Groups height/widths:-
For lngJ = 0 To lngI
With frm.Controls.Item(arrCtls(lngJ).Name)
.left = arrCtls(lngJ).left * sngHorzFactor
.Top = arrCtls(lngJ).Top * sngVertFactor
.Height = arrCtls(lngJ).Height * sngVertFactor
.Width = arrCtls(lngJ).Width * sngHorzFactor
End With
Next lngJ
'Now resize height for each section and form width using stored values:-
With frm
.Width = lngWidth
.Section(Access.acHeader).Height = lngHeaderHeight
.Section(Access.acDetail).Height = lngDetailHeight
.Section(Access.acFooter).Height = lngFooterHeight
'Now unhide form sections:-
.Section(Access.acHeader).Visible = blnHeaderVisible
.Section(Access.acDetail).Visible = blnDetailVisible
.Section(Access.acFooter).Visible = blnFooterVisible
.Painting = True 'Turn form painting on.
End With
Erase arrCtls 'Destory array.
Set ctl = Nothing 'Free up resources.
End Sub
'---------------------------------------------------------------------------------------
' Procedure : getTopOffset
' DateTime : 27/01/2003
' Author : Jamie Czernik
' Purpose : Function returns the total size in pixels of menu/toolbars at the top of
' the Access window allowing the form to be positioned in the centre of the
' screen.
'---------------------------------------------------------------------------------------
Private Function getTopOffset() As Long
Dim cmdBar As Object
Dim lngI As Long
On Error GoTo err
For Each cmdBar In Application.CommandBars
If ((cmdBar.Visible = True) And (cmdBar.Position = COMMANDBAR_TOP)) Then
lngI = lngI + 1
End If
Next cmdBar
getTopOffset = (TITLEBAR_PIXELS + (lngI * COMMANDBAR_PIXELS))
exit_fun:
Exit Function
err:
'Assume only 1 visible command bar plus the title bar:
getTopOffset = TITLEBAR_PIXELS + COMMANDBAR_PIXELS
Resume exit_fun
End Function
'---------------------------------------------------------------------------------------
' Procedure : getLeftOffset
' DateTime : 27/01/2003
' Author : Jamie Czernik
' Purpose : Function returns the total size in pixels of menu/toolbars at the left of
' the Access window allowing the form to be positioned in the centre of the
' screen.
'---------------------------------------------------------------------------------------
Private Function getLeftOffset() As Long
Dim cmdBar As Object
Dim lngI As Long
On Error GoTo err
For Each cmdBar In Application.CommandBars
If ((cmdBar.Visible = True) And (cmdBar.Position = COMMANDBAR_LEFT)) Then
lngI = lngI + 1
End If
Next cmdBar
getLeftOffset = (lngI * COMMANDBAR_PIXELS)
exit_fun:
Exit Function
err:
'Assume no visible command bars:-
getLeftOffset = 0
Resume exit_fun
End Function
'---------------------------------------------------------------------------------------
' Procedure : adjustColumnWidths
' DateTime : 27/01/2003
' Author : Myke Myers [Split() replacement for Access 97 by Jamie Czernik]
' Purpose : Adjusts column widths for list boxes and combo boxes.
'---------------------------------------------------------------------------------------
Private Function adjustColumnWidths(strColumnWidths As String, sngFactor As Single) _
As String
Dim astrColumnWidths() As String
Dim strTemp As String
Dim lngI As Long
Dim lngJ As Long
'Get the column widths:-
'THIS CODE BY JAMIE CZERNIK------------------------------------------->
'Replace the Split() function as not available in Access 97:
ReDim astrColumnWidths(0)
For lngI = 1 To VBA.Len(strColumnWidths)
Select Case VBA.Mid(strColumnWidths, lngI, 1)
Case Is <> ";"
astrColumnWidths(lngJ) = astrColumnWidths(lngJ) & VBA.Mid( _
strColumnWidths, lngI, 1)
Case ";"
lngJ = lngJ + 1
ReDim Preserve astrColumnWidths(lngJ) 'Resize the array.
End Select
Next lngI
lngI = 0
'--------------------------------------------> END CODE BY JAMIE CZERNIK.
'Access 2000/2002 users can uncomment the line below and remove the split()
'replacement above.
'astrColumnWidths = Split(strColumnWidths, ";")'Available in Access 2000/2002 only
Do Until lngI > UBound(astrColumnWidths) 'Loop through all divisions
strTemp = strTemp & CSng(astrColumnWidths(lngI)) * sngFactor & ";"
lngI = lngI + 1
Loop
adjustColumnWidths = strTemp
Erase astrColumnWidths 'Destroy array.
End Function
'---------------------------------------------------------------------------------------
' Procedure : getOrigWindow
' DateTime : 27/01/2003
' Author : Jamie Czernik
' Purpose : Routine stores the original window dimensions before resizing call it
' when form loads. (before calling ResizeForm Me!).
' Call it: Form_Load()
' [More info in "Important Points" - point 5 - in help file.]
'---------------------------------------------------------------------------------------
Public Sub getOrigWindow(frm As Access.Form)
On Error Resume Next
OrigWindow.Height = frm.WindowHeight
OrigWindow.Width = frm.WindowWidth
End Sub
'---------------------------------------------------------------------------------------
' Procedure : RestoreWindow
' DateTime : 27/01/2003
' Author : Jamie Czernik
' Purpose : Routine restores the original window dimensions call it when form closes.
' Call it: Form_Close()
' [More info in "Important Points" - point 5 - in help file.]
'---------------------------------------------------------------------------------------
Public Sub RestoreWindow()
On Error Resume Next
Access.DoCmd.MoveSize , , OrigWindow.Width, OrigWindow.Height
Access.DoCmd.Save
End Sub
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